212738764 has 24 divisors (see below), whose sum is σ = 426621440. Its totient is φ = 90928656.

The previous prime is 212738699. The next prime is 212738783. The reversal of 212738764 is 467837212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 589 + ... + 20635.

Almost surely, 2^212738764 is an apocalyptic number.

It is an amenable number.

212738764 is an abundant number, since it is smaller than the sum of its proper divisors (213882676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212738764 is a wasteful number, since it uses less digits than its factorization.

212738764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20437 (or 20435 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 212738764 is about 14585.5669756098. The cubic root of 212738764 is about 596.9650109915.

The spelling of 212738764 in words is "two hundred twelve million, seven hundred thirty-eight thousand, seven hundred sixty-four".